Finding the Fourth Proportional to 207,753,605.40, 311,630,408.10 and 199,817,419.80
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Solution
The fourth proportional to 207,753,605.40, 311,630,408.10 and 199,817,419.80 is: 299,726,129.70
Step by Step Solution
- Step 1: Write the proportion equation
207,753,605.40 : 311,630,408.10 = 199,817,419.80 : x - Step 2: Convert to fraction form
207,753,605.40/311,630,408.10 = 199,817,419.80/x - Step 3: Cross multiply
207,753,605.40x = 311,630,408.10 × 199,817,419.80 - Step 4: Simplify right side
207,753,605.40x = 62,269,184,077,763,032 - Step 5: Solve for x
x = 62,269,184,077,763,032/207,753,605.40 - Step 6: Final answer
x = 299,726,129.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.